1 // SPDX-License-Identifier: GPL-2.0
2 /*---------------------------------------------------------------------------+
5 | Code to implement the FPU register/register arithmetic instructions |
7 | Copyright (C) 1992,1993,1997 |
8 | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia |
9 | E-mail billm@suburbia.net |
12 +---------------------------------------------------------------------------*/
14 #include "fpu_system.h"
16 #include "control_w.h"
24 FPU_add(&st(i), FPU_gettagi(i), 0, control_word);
32 FPU_mul(&st(i), FPU_gettagi(i), 0, control_word);
39 FPU_sub(0, FPU_rm, control_word);
46 FPU_sub(REV, FPU_rm, control_word);
53 FPU_div(0, FPU_rm, control_word);
60 FPU_div(REV, FPU_rm, control_word);
68 FPU_add(&st(i), FPU_gettagi(i), i, control_word);
75 FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word);
82 FPU_sub(DEST_RM, FPU_rm, control_word);
89 FPU_sub(REV | DEST_RM, FPU_rm, control_word);
96 FPU_div(DEST_RM, FPU_rm, control_word);
103 FPU_div(REV | DEST_RM, FPU_rm, control_word);
111 if (FPU_add(&st(i), FPU_gettagi(i), i, control_word) >= 0)
119 if (FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word) >= 0)
125 /* fsubrp st(i),st */
127 if (FPU_sub(DEST_RM, FPU_rm, control_word) >= 0)
135 if (FPU_sub(REV | DEST_RM, FPU_rm, control_word) >= 0)
141 /* fdivrp st(i),st */
143 if (FPU_div(DEST_RM, FPU_rm, control_word) >= 0)
151 if (FPU_div(REV | DEST_RM, FPU_rm, control_word) >= 0)